A dispenser pump and elastic restoring means for a dispenser pump

ABSTRACT

The disclosure relates to a dispenser pump (10) for manual dispensing of product (2) in fluid form out of a container (3) and for leakproof assembly to an opening (3A) of the container by means of a closure (4). The dispenser pump comprises a housing (20) adapted for being held fixed in relation to the container after assembly. The housing defining a pump chamber (21) with an inlet (22) configured for fluid communication with the inside of the container. The dispenser pump comprising at least one spring (30) and an actuator (40) configured for fluid communication with the inside of the pump chamber and a piston rod (42) fixedly connected to the actuator and arranged for reciprocating motion inside the pump chamber. The disclosure further relates to a spring (30) for a dispenser pump (10).

TECHNICAL FIELD

The present disclosure relates to a press-type liquid pump, i.e. adispenser pump for manual dispensing of product in fluid form out of acontainer and for leakproof assembly to an opening of the container bymeans of a closure and an elastic restoring means, such as a spring, fora dispenser pump. More specifically, the disclosure relates to adispenser pump for manual dispensing of product in fluid form out of acontainer and for leakproof assembly to an opening of the container bymeans of a closure and a spring for a dispenser pump as defined in theintroductory parts of independent claims.

BACKGROUND ART

There are many different types of known press-type liquid pumps on themarket for dispensing liquid products, i.e. liquid soaps or the like.Such press-type liquid pumps are commonly installed at an opening of acontainer for pumping and dispensing the liquid product in the containerout of the container by means of pressing operation manually performedby a user, often done by pressing downwards on a pump pressing head orthe like. Such liquid pumps generally have at least one elasticrestoring function or device for restoring its pump pressing head to anoriginal position after the user has removed the downward pressing forceon the pressing head, and during the restoring of the pressing head,thereby sucking the liquid product within the container into a liquidreservoir of the liquid pump for pumping and dispensing by a nextpressing, this first action is commonly known as “priming”.

In prior art press-type liquid pumps, the elastic restoringfunction/device is commonly arranged between a movable unit, e.g.including the pressing head and a piston rod, and a fixed unit, e.g.including a cylinder, in a pre-loaded manner, ensuring sufficientelastic force to enable the movable unit to be returned to its originalposition relative to the fixed unit after the user has removed thedownward pressing force.

An example of a press-type liquid pump is found in U.S. Pat. No.9,539,597 B2 disclosing restoring means in the form of a leaf/platespring.

Many prior art press-type liquid pumps use a metal spring for therestoring function. Any metal spring for use in such liquid pumps rustseasily due to damp/moisture and/or contact with liquid if made of ametal prone for this, and a rusted spring affects the product quality,i.e. including the quality of the spring and the liquid product in thecontainer). Furthermore, the cost of a metal spring is relatively high,in particular if made of metal less prone to rusting. Regardingrecycling of the liquid pump, a metal spring must be separated fromother plastic members of the liquid pump for separate recoveryincreasing recycling cost or in reality even risks making recyclingimpossible.

Some problems with prior art solutions are that keeping the elasticrestoring means in a loaded state for a long time would result increeping and fatigue failure of the elastic restoring means, ultimatelyresulting in an insufficient rebounding force to restore a movable unitinto its start or original position affecting the amount of liquid beingdispensed/outputted by the liquid pump, and/or that a leaf/plate springachieved by axially loading a beam, e.g. as in U.S. Pat. No. 9,539,597B2, must have a pre-determined initial shape/deflection for ensuring adefined and controlled movement/bending when loaded and that such aleaf/plate spring provides an uncontrolled deflection if the pressingforce exceeds the critical force/load of the spring, hence, if thatoccurs, the strain/stress in the spring becomes so high that the springbreaks or is plastic/permanent deformed and stops working as a spring,this behaviour is also affected by variation in the spring material,aging and/or too high or low surrounding temperatures, meaning that suchan axially loaded beam for a spring is not robust enough and/or that aleaf/plate spring achieved by axially loading a beam, e.g. as in U.S.Pat. No. 9,539,597 B2, require larger effort, i.e. about 80% of themaximal pressing force applied by a user for bending the spring must bereached/used before a sufficient movement of the pump is induced,whereafter reaching this force only a small increase of the pressingforce is required to achieve a large movement/displacement/deplacementand thereby a large dispensed amount of product meaning that correctdosage is difficult to achieve/control and also that spill/spillage ismuch more imminent/likely to occur, wherefore this type of leaf/platespring is difficult to use and increases risk of faulty dosage and spillof product and/or that a leaf/plate spring achieved by axially loading abeam, e.g. as in U.S. Pat. No. 9,539,597 B2, require a large volume andsurrounding space when deflecting/bending during use so that itsdeflection is not hindered by any obstacle in its direction ofdeflecting in the radial direction.

There is thus a need for improvement of manual press-type liquid pumpscomprising elastic restoring functionality via a spring for restoringtheir moving and pumping parts.

SUMMARY

It is an object of the present disclosure to mitigate, alleviate oreliminate one or more of the above identified deficiencies anddisadvantages in the prior art and solve at least the above mentionedproblem/-s.

According to a first aspect there is provided a dispenser/dispenser pumpfor manual dispensing of product in fluid form out of a container andfor leakproof assembly to an opening of the container by means of aclosure, the dispenser pump defining a longitudinal axis and comprisinga housing adapted for being held fixed and/or stationary and/or axiallyin relation to the container after assembly, the housing defining a pumpchamber with an inlet configured for fluid communication with the insideof the container, the dispenser pump comprising at least one spring, anactuator, a spout being configured for fluid communication with theinside of the pump chamber and a piston rod fixedly connected to theactuator and arranged for reciprocating motion inside the pump chamber,wherein the actuator is configured for moving together with its pistonrod reciprocally relative the housing between a first/start position andan end and/or intermediary and/or activated position to pump product outof the container via the spout by use of a pressing force applied by auser to the actuator to move the actuator from its first or startposition towards the housing and closure into its end and/orintermediary and/or activated position with its piston rod moving insidethe pump chamber along the longitudinal dispenser pump axis and anelastic force of the spring to return the actuator with piston rod fromthe end or intermediary/activated position to the first position afterthe pressing force is removed for sucking in product into the pumpchamber, wherein all parts of the dispenser pump are manufactured byrecyclable plastic material including the spring having a helical shape,that the spring comprises a wire and a first end and a second end,wherein the wire is provided with a free wire end at each of the firstand second end of the spring. An advantage is that simpler and fasterrecycling of a dispenser pump is provided. This is especially true ifall parts of the dispenser pump is manufactured by recyclable plasticmaterial within the same family of plastic, e.g. polyolefin. The springis an elastic restoring device/means for the dispenser pump. Anadvantage of having a recyclable plastic spring with free wire ends isthat strain/stress in the wire at the free ends is reduced. An advantageis that the helically shaped spring made of recyclable plastics materialrequires a smaller cross-sectional area compared to prior art whilestill providing the same spring characteristics. An advantage is thatthe helically shaped spring of recyclable plastics material requiresless plastic material compared to prior art while still providing thesame spring characteristics.

According to some embodiments, the spring is configured for arrangementat least partly outside or fully/wholly outside the container and/or thepump housing and/or the pump chamber and/or the piston rod. An advantageis that at least a part of the spring is not soiled by any productproviding improved and prolonged functionality as the risk of jammingdue to no or at least less buildup of product in the spring iseliminated. An externally arranged spring does not have to beintroducible through a container opening, wherefore the spring may beprovided with a larger size/diameter enabling optimising thecross-section of the spring, i.e. its wire size/cross-section for leastspring volume possible versus optimal spring length. Furthermore, theplastics material of the spring does not have to be approved for foodapplication and do not have to stand the product (e.g. acid or the like)as it does not physically contact the food product.

According to some embodiments, the spring is configured for beingarranged at least partly or fully/wholly inside the container and/or thepump housing and/or the pump chamber and/or the piston rod. Advantagesare that the spring is at least partly shielded from or at leastsomewhat protected from direct sunlight and/or oxygen by the containerand/or product increasing the durability and/or life span of the springby eliminating or at least reducing thedegradation/decomposition/embrittlement of the plastic spring materialand/or that the user of the dispenser pump does not risk getting caught,nipped or pinched by the spring when using the dispenser pump. An innerspring enable providing a dispenser pump of lower height/building heightfor smaller pump and/or dispensing volumes and the same design/look asprior art dispenser pumps with metal springs.

In some embodiments, the spring is configured for being arranged insidethe container and the pump housing and the pump chamber. An inner springenable providing a dispenser pump of lower height/building height andthe same design/look as prior art dispenser pumps with metal springs.

In some embodiments, the spring is configured for being arranged atleast partly inside the container and the pump housing and the pumpchamber and the piston rod. An inner spring enable providing a dispenserpump of lower height/building height and the same design/look as priorart dispenser pumps with metal springs.

In some embodiments, the spring is configured for being arranged atleast partly inside the container and the pump housing and configuredfor being arranged at least partly outside the pump chamber and thepiston rod.

According to some embodiments, the pump chamber is configured for beinglocated at least partly below the closure. According to someembodiments, the pump chamber is configured for being locatedfully/wholly below the closure. Advantages are that the spring is atleast partly shielded from or at least somewhat protected from directsunlight and/or oxygen by the container and/or product increasing thedurability and/or life span of the spring by eliminating or at leastreducing the degradation/decomposition/embrittlement of the plasticspring material and/or enable providing a dispenser pump for smallerpump/dispensing volumes with lower height/building height and the samedesign/look as prior art dispensers with metal springs. According tosome embodiments, the pump chamber and the area/surfaces which theproduct is in contact with during pumping and dispensing and afterfilling the pump chamber are configured for being located fully/whollybelow the closure.

According to some embodiments, the spring is relaxed when the actuatoris in its first/start position before its first use and/or stroke. Anadvantage is that creeping and fatigue failure of the plastic materialof the spring is eliminated or at least reduced.

According to some embodiments, the spring is under compression when theactuator has returned to its start position after its first use and/orstroke from the start position to the end/activated position and back tothe first/start position, this first stroke being a first priming strokefor enabling filling the pump chamber with product. One or more strokesmay be required as priming strokes for filling the dispenser pump fullyincluding its pump chamber and all other surfaces/parts/areas that areconfigured for being in contact with the product after the full primingis achieved, e.g. the spout. An advantage is that the time during whichthe plastic spring is pre-loaded is reduced as the spring is storedwithout being preloaded before use, whereby the risk of creeping andfatigue failure of the plastic material of the spring is eliminated orat least the adverse effect of this is reduced during its operation,i.e. during its functional life span.

According to some embodiments, the spring is under compression when theactuator is in its first/start position before its first use and/orstroke. An advantage is that any priming is possible to perform/achievequicker than hitherto possible with prior art pumps as the product issucked in during the return stroke.

According to some embodiments, the spring is configured for beingarranged at least partly between the container/pumphousing/chamber/closure and the spout. Hence, the outer size/diameter ofthe spring is not limited, at least not fully limited, by the size ofthe opening of the container, i.e. the spring can be assembled at theopening of any container with a suitably adapted closure.

According to some embodiments, the spring is configured for beingarranged fully/wholly between the container/pump housing/chamber/closureand the spout. Hence, the outer size/diameter of the spring is notlimited by the size of the container opening, i.e. the spring can beassembled at the opening of any container with a suitably adaptedclosure.

According to some embodiments, the spring is configured for beingarranged fully/wholly below the closure and/or spout. This provides anadvantage in decreasing the height of the dispenser pump, i.e. its partbeing arranged outside the container and also enable the samedesign/size/height as for prior art dispenser pump meaning easyreplacement of prior art dispensers without requiring more space.

According to some embodiments, the spring is configured for beingarranged at least partly at/adjacent/close to/above the spout. Thisenables decreasing the building height of the dispenser pump and/orincreasing the length of the spring when used for dispenser pumps withfixed nozzles/spouts.

According to some embodiments, the spring is configured for beingarranged inside the container and/or pump housing and/or pump chamber ata distance from the closure. This provides a possibility of optimizingand improving the guiding of the piston rod movement in the pumpchamber. This is improved by adapting the height of the closure of thecontainer such that an upper part of guiding and a lower part of guidingthe piston rod are separatated at sufficient distance from each otherfor increased stability when the piston rod reciprocates.

According to some embodiments, the dispenser comprises one or checkvalve made of a recyclable plastics material and configured for beingarranged at the pump chamber inlet and a discharge valve made of arecyclable plastics material and configured for being arranged at thespout, the check valve is configured for being closed, when the userpresses down on the actuator and moves the piston rod towards the pumpchamber inlet compressing the spring while forcing product out of thepump chamber upwards towards the spout opening the discharge valve fordispensing product, and for being opened when the user releases theactuator/removes the pressing force by means of the spring returning thepiston rod and actuator back into the first/start position while drawingout product inside the container into the pump chamber to fill it, whileclosing the discharge valve(s) and sealing or closing the pump chamberto prevent product from flowing back into the container once the pumpchamber is filled. Hence, this provides a sufficient suction pressurewhen the piston rod returns to suck in product in the pump chamber fromthe container without risking sucking in air into the pump chamberthrough the spout opening.

According to some embodiments, the dispenser comprises a dip tube madeof a recyclable plastics material and configured to extend from theinlet of the pump chamber with an adaptable length into a predetermineddepth of the container depending on the type/size/length/height of thecontainer. An advantage is that the dispenser is adaptable to containersof different lengths/depths. Another advantage is that this enables thedip tube to be as simple designed as possible, e.g. having a smooth in-and outside and be easily manufactured as piece or yard goods, i.e. bythe metre, e.g. the rolled up on reels or coils, and then easily cutinto desired lengths when to be used.

According to some embodiments, the free end of the dip tube configuredfor receiving product is cut into a predetermined shape and/or angleand/or size and/or diameter. If a dip tube is manufactured in acontinuous way by the metre, a preferred cut angle is e.g. between 10°to 30° at each of its ends, whereby waste/loss of material iseliminated. An advantage is that an angled end guarantees that eventhough this angled dip tube end contacts the bottom of the container,this end is not closed off and product can still enter it. One advantageis that the inlet area of this angle cut end is larger compared to astraight cut end meaning a lower drop of pressure is achieved at the endbeing beneficial for viscous products.

In some embodiments, the actuator and the spout are configured to bemovable together as one unit. This enables using the spout as a handlefor pumping.

In some embodiments, the actuator is configured to be movable and thespout is stationary/fixated. This enables prolonging the spring andaligning the pressing force with the centre axis of the spring forbetter stability when pumping.

According to some embodiments, the spring is a twin spring. Thisprovides a spring with longer stroke length than hitherto possible withprior art springs and enables an optimization of the cross-sections ofthe springs giving a minimum total spring volume/spring materialconsumption/use in a given space. In particular if combined withpolygonal cross-sections for the wires of each spring.

In some embodiments, the dispenser pump comprises at least two springs.This gives at least the same advantages as for the twin springdisclosed.

In some embodiments, one spring is configured for being arranged insideanother spring. This gives at least the same advantages as for thesprings disclosed and a better/more efficient use of available space forthe springs.

In some embodiments, a first spring has a size and/or diameter beingadapted for fitting/being received within a second spring. This gives atleast the same advantages as for the springs disclosed and optimised andmore compact design for the springs.

In some embodiments, a first spring has a size being adapted forfitting/being received within a second spring, the springs havingessentially same or the same length. This gives at least the sameadvantages as for the springs disclosed and more compact design, inparticular in regard of the building height for the springs.

In some embodiments, a first spring is adapted for fitting/beingreceived within a second spring, the springs being concentricallyarranged. This gives at least the same advantages as for the springs asdisclosed and an optimization of the spring functionality as anypressing forced applied to them is better aligned giving an increasedstability.

In some embodiments, the centre axis of the first spring is aligned withthe centre axis of the second spring. This gives at least the sameadvantages as for other embodiments as disclosed and further improvedcontrol of spring functionality/stability when compressed and relaxed.

According to a second aspect, a spring for a dispenser pump according toany preceding aspect/embodiment is provided, wherein the spring has ahelical shape and is made of a recyclable plastics material and is atleast partly shaped as a cylindrical and/or non-cylindrical helicalspring. An advantage is that simpler and faster recycling of a springand/or dispenser pump comprising such a spring is provided. This isespecially true if all parts of the dispenser pump are manufactured byrecyclable plastic material within the same family of plastic, e.g.polyolefin.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into a non-cylindrical shapebeing substantially symmetrical or symmetrical around its centre axis.An advantage is that if a certain function and/or design of a springdemand another shape for the spring this manufacture enables adaptingthe spring accordingly.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a polygonal cross-section. This achieves astronger/more durable spring when available space for it is limitedcompared to traditional circular cross-sections.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a square cross-section. This gives at least the sameadvantages as for the springs disclosed above and/or below and furtherthat the use/consumption of plastic material for making a spring isoptimised and reduced.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a rectangular cross-section. This gives at least thesame advantages as for the springs disclosed above and/or below and thatuse/consumption of plastic material for making a spring is optimised andreduced.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a quadratic cross-section. This gives at least the sameadvantages as for the springs as disclosed above and/or below and thatthe use/consumption of plastic material for making the spring isminimized.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a triangular cross-section. This enables adapting thestrength/durability of the spring when available space for it is limitedcompared to traditional circular cross-sections.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a conical cross-section. This enables adapting thestrength/durability of the spring when available space is limitedcompared to traditional circular cross-sections by orienting andarranging/locating the conical shape in an optimised way, e.g. directingits apex optimally.

According to some embodiments, the spring comprises and/or is configuredwith and/or is configured for manufacture into the shape of a helicallywinded wire with a rounded cross-section, such as an oval and/orelliptical cross-section.

According to some embodiments, the spring(s) comprise(s) and/or is/areconfigured with and/or is/are configured for manufacture into the shapeof one or more helically winded wires with a combination of roundedcross-section(s), such as oval and/or elliptical cross-section(s), andnon-rounded cross-section(s), such as polygonal and/or square and/orrectangular and/or quadratic and/or triangular and/or conicalcross-section. This enables adapting the strength/durability of thespring when available space for it is limited compared to traditionalcross-sections, e.g. when available space is limited in either thevertical direction, i.e. along the length of the spring in asubstantially parallel direction or in a parallel direction or thehorizontal direction, i.e. in the radial direction in an inclineddirection relative the longitudinal spring extension or in asubstantially perpendicular or perpendicular direction relative thelongitudinal direction of the spring or in more than one directioncorresponding to these directions or any other direction.

According to some embodiments, the spring comprises a conical springwire cross-section being arranged with its apex directed radiallyoutwards from the spring centre and/or longitudinal axis.

According to some embodiments, the spring comprises a conical springwire cross-section being arranged with its apex directed radiallyinwards towards the spring centre and/or longitudinal axis.

According to some embodiments, the spring is configured with and/or formanufacture into the shape of a helically winded wire with a polygonalcross-section having a/an width/extension in the radial direction of thespring being less, equal or larger than its height/thickness/extensionin the axial/longitudinal direction of the spring.

According to some embodiments, the spring being/when at least partlyshaped as a conical helical spring, its apex is configured for facingtowards the container bottom.

According to some embodiments, the spring being/when at least partlyshaped as a conical helical spring, its apex is configured for facingtowards the container opening.

According to some embodiments, the spring, being/when at least partlyshaped as a conical helical spring, its apex is configured for facingtowards the spout.

In some embodiments, the spring comprises and/or is configured formanufacture into and/or is configured with the shape of a helicallywinded wire with an oval and/or elliptical cross-section.

According to some embodiments, the spring comprises a first end and asecond end, wherein at least one end is flattened and/or face grinded.Advantages are that its assembly is simplified as the flattening worksas an end guidance and its stability is improved during its compressionand relaxation as the spring is more steadily supported at its end by alarger supporting area/surface. This reduces the load/stress or eveneliminates excess stress/load in at least parts of the first and lastwinding of spring wire having a lower cross-sectional height, so thatthese end windings are not overloaded limiting maximum capacity of thespring.

According to some embodiments, both its first end and second end areflattened/face grinded. Advantages are that assembly is simplified asthe flattening works as ends guidance and stability is improved duringcompression and relaxation as the spring is more steadily supported ateach end by totally larger supporting area/surface. This reduces theload/stress or even eliminates excess stress/load in at least parts ofthe first and last winding of spring wire having a lower cross-sectionalheight, so that these end windings are not overloaded limiting maximumcapacity of the spring.

According to some embodiments, the end is flattened and/or face grindedin a plane being perpendicular to the centre/longitudinal axis of thespring. Advantages are that assembly is simplified as this flatteningworks as an end guidance and the stability of the spring is improvedduring compression and relaxation as the spring is more steadilysupported at its end by a larger and more distinctly made supportingarea/surface. This reduces the load/stress or even eliminates excessstress/load in at least parts of the first and last winding of springwire having a lower cross-sectional height, so that these end windingsare not overloaded limiting maximum capacity of the spring.

According to some embodiments, the spring is configured for manufactureby injection moulding and/or machining. An advantage is that simpler,quicker and cheaper manufacture of a spring is provided. This inparticular being the case when a spring of recyclable plasticscomprising and/or being configured with and/or for manufacture into theshape of a helically winded wire with a polygonal cross-section having asmall angle of relief, e.g. about 1°-2°, as this simplifies manufactureby enabling providing the mould with a smooth centre axle and two mouldhalves that are able to move perpendicular to the centre axle of themould and when the mould halves are opened the spring is easily removedfrom the mould. Such a polygonal shape of a spring wire cross-section isalso of advantage when manufacturing such a spring of recyclableplastics by means of turning in a lathe or the like device.

In some embodiments, the spring is configured with a helical envelopesurface formed by the outer surface of the helically winded wire, whichwindings form an at least partly open structure when the spring isrelaxed.

In some embodiments, the spring comprises one or more open ends. In someembodiments, the spring comprises one or more open ends with one or morefree spring wire ends.

In some embodiments, the spring comprises one or more closed ends. Insome embodiments, the spring comprises one or more closed ends with oneor more free spring wire ends.

In some embodiments, the spring comprises one or more closed andgrounded ends. In some embodiments, the spring comprises one or moreclosed and grounded ends with one or more free spring wire ends.

In some embodiments, the spring comprises one or more double closed andgrounded ends. In some embodiments, the spring comprises one or moredouble closed and grounded ends with one or more free spring wire ends.

In some embodiments, the housing of the dispenser pump is made of arecyclable plastics material. In some embodiments, the housing includingthe pump chamber with an inlet are made of a recyclable plasticsmaterial. In some embodiments, the actuator of the dispenser pump ismade of a recyclable plastics material. In some embodiments, the housingand its pump chamber with inlet and the actuator of the dispenser pumpare made of a recyclable plastics material. In some embodiments, thespout of the dispenser pump is made of a recyclable plastics material.In some embodiments, the housing and its pump chamber with inlet and theactuator and the spout of the dispenser pump are made of a recyclableplastics material. In an embodiment, the piston rod of the dispenserpump is made of a recyclable plastics material. In some embodiments, theclosure of the dispenser pump for leakproof assembly to an opening ofthe container is made of a recyclable plastics material. In someembodiments, the closure of the dispenser pump for leakproof assembly toan opening of the container comprises one or more gaskets being made ofa recyclable plastics material. In some embodiments, the closure of thedispenser pump for leakproof assembly to an opening of the container andits one or more gaskets are made of a recyclable plastics material. Insome embodiments, the housing and its pump chamber with inlet and theactuator and the spout and the piston rod of the dispenser pump are madeof a recyclable plastics material. In some embodiments, the housing andits pump chamber with inlet and the actuator and the spout and thepiston rod and the spring of the dispenser pump are made of a recyclableplastics material. In some embodiments, the housing and its pump chamberwith inlet and the actuator and the spout and the piston rod and thespring and the closure of the dispenser pump are made of a recyclableplastics material. In some embodiments, the housing and its pump chamberwith inlet and the actuator and the spout and the piston rod and thespring and the closure and its gasket(s) of the dispenser pump are madeof a recyclable plastics material. In some embodiments, the housing andits pump chamber with inlet and the actuator and the spout and thepiston rod and the spring and the closure and the dip tube of thedispenser pump are made of a recyclable plastics material. In someembodiments, the housing and its pump chamber with inlet and theactuator and the spout and the piston rod and the spring and the checkvalve(s) of the dispenser pump are made of a recyclable plasticsmaterial. In some embodiments, the housing and its pump chamber withinlet and the actuator and the spout and the piston rod and the springand the closure and its gasket(s) and the check valve(s) and the diptube(s) of the dispenser pump are made of a recyclable plasticsmaterial. In some embodiments, the housing and its pump chamber withinlet and the actuator and the spout and the piston rod and the springand the closure and its gasket(s) and the check valve(s) and the diptube(s) and the discharge valve(s) of the dispenser pump are made of arecyclable plastics material. In some embodiments, the housing and itspump chamber with inlet and the actuator and the spout and the pistonrod and the spring and the closure and its gasket(s) and the checkvalve(s) and the dip tube(s) of the dispenser pump are made of arecyclable plastics material, which dispenser pump is configured to berecycled with the container made of recyclable plastics material whenassembled thereto or to be recycled separately when not assembled to thecontainer. Effects and features of the second aspect are to large extentanalogous to those described above in connection with the first aspect.Embodiments mentioned in relation to the first aspect are largelycompatible with the second aspect.

The present disclosure will become apparent from the detaileddescription below. The detailed description and specific examplesdisclose preferred embodiments of the disclosure by way of illustrationonly. Those skilled in the art understand from guidance in the detaileddescription that changes and modifications may be made within the scopeof the disclosure.

It is to be understood that the herein disclosed disclosure is notlimited to the particular component parts ofdispenser/spring/-s/described or steps of a method/-s described sincesuch dispenser/spring/-s and method/-s may vary. It is also to beunderstood that the terminology used herein is for purpose of describingparticular embodiments only, and is not intended to be limiting. Itshould be noted that, as used in the specification and the appendedclaim, the articles “a”, “an”, “the”, and “said” are intended to meanthat there are one or more of the elements unless the context explicitlydictates otherwise. Thus, e.g., reference to “a unit” or “the unit” mayinclude several devices, and the like. Further, the words “comprising”,“including”, “containing” and similar wordings does not exclude otherelements or steps.

BRIEF DESCRIPTIONS OF THE DRAWINGS

The above objects, as well as additional objects, features andadvantages of the present disclosure will be more fully appreciated byreference to the following illustrative and non-limiting detaileddescription of example embodiments of the present disclosure, when takenin conjunction with the accompanying drawings.

FIG. 1A shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after beingdisassembled from a container—according to an embodiment of the presentdisclosure.

FIG. 1B shows a perspective view of the dispenser pump of FIG. 1A at anangle from below before being assembled to a container or after beingdisassembled from a container visualized with a bidirectional arrow.

FIG. 1C shows a cross-sectional view of the dispenser pump along lineA-A in FIG. 1A.

FIG. 2A shows a perspective view of a dispenser or dispenser pump—at anangle from above before being assembled to a container or after beingdisassembled from a container—according to another embodiment of thepresent disclosure.

FIG. 2B shows a perspective view of the dispenser pump of FIG. 2A at anangle from below before assembly to a container or after disassemblyfrom a container visualized with a bidirectional arrow.

FIG. 2C shows a cross-sectional view of the dispenser pump along lineB-B in FIG. 2A.

FIG. 3A shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after disassemblyfrom a container—according to yet another embodiment of the presentdisclosure.

FIG. 3B shows a perspective view of the dispenser pump of FIG. 3A (at anangle from below before assembly to a container or after disassemblyfrom a container visualized with a bidirectional arrow).

FIG. 3C shows a cross-sectional view of the dispenser pump along lineC-C in FIG. 3A.

FIG. 4A shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after disassemblyfrom a container—according to still another embodiment of the presentdisclosure.

FIG. 4B shows a perspective view of the dispenser pump of FIG. 4A (at anangle from below before assembly to a container or after disassemblyfrom a container visualized with a bidirectional arrow).

FIG. 4C shows a cross-sectional view of the dispenser pump along lineD-D in FIG. 4A according to an embodiment of the present disclosure.

FIG. 5A shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after disassemblyfrom a container—according to another embodiment of the presentdisclosure.

FIG. 5B shows a perspective view of the dispenser pump of FIG. 5A (at anangle from below before assembly to a container or after disassemblyfrom a container visualized with a bidirectional arrow).

FIG. 5C shows a cross-sectional view of the dispenser pump along lineE-E in FIG. 5A according to an embodiment of the present disclosure.

FIG. 6 shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after disassemblyfrom a container—according to still another embodiment of the presentdisclosure.

FIG. 7A shows a perspective view of a dispenser or dispenser pump—at anangle from above before assembly to a container or after disassemblyfrom a container—according to an embodiment of the present disclosure.

FIG. 7C shows a cross-sectional view of the dispenser pump along lineF-F in FIG. 7A according to an embodiment of the present disclosure.

FIGS. 8A and 8B show some different possible and suitable cross-sectionsof a part of the dispenser pump according to embodiments of the presentdisclosure, FIG. 8A showing in particular six different views I-VIII ofa part of the dispenser pump according to embodiments of the presentdisclosure.

FIG. 9A shows a possible and suitable spring in cross-section in theupper view along line G-G of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 9B shows a possible and suitable spring in cross-section in theupper view along line H-H of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 9C shows a possible and suitable spring in cross-section in theupper view along line I-I of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 9D shows a possible and suitable spring in cross-section in theupper view along lineJ-J of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 10A shows a possible and suitable spring in cross-section in theupper view along line K-K of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 10B shows a possible and suitable spring in cross-section in theupper view along line L-L of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 10C shows a possible and suitable spring in cross-section in theupper view along line M-M of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

FIG. 10D shows a possible and suitable spring in cross-section in theupper view along line N-N of the lower perspective view to use in thedispenser pump according to embodiments of the present disclosure.

DETAILED DESCRIPTION

The present disclosure will now be described with reference to theaccompanying drawings/FIGS. 1A to 10D, in which preferred exampleembodiments of the disclosure are shown. The disclosure may, however, beembodied in other forms and should not be construed as limited to theherein disclosed embodiments. The disclosed embodiments are provided tofully convey the scope of the disclosure to the skilled person.

FIGS. 1A to 7C show a dispenser or dispenser pump 10 for manualdispensing of product 2 in fluid form out of a container 3. Thisdispenser pump 10 is configured for leakproof assembly to an opening 3Aof the container by means of a closure 4. This leakproof assembly by theclosure 4 is in one embodiment detachable but in other embodiments notdetachable without breaking or destroying the closure 4 and/or dispenserpump 10 and/or container 3 and/or its opening 3A, e.g. due to usingwelding or gluing or clamping as ways of assembly.

In the cross-sectional views of FIGS. 1C, 2C, 3C, 4C, 5C and 7C, acentre or longitudinal axis CD of the dispenser pump 10 extends in thevertical direction in the plane of the associated figure and in parallelwith the longitudinal direction of the dispenser pump 10 while in theperspective views of FIGS. 1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B, 5A, 5B and 7Athis centre axis CD extends in parallel with the longitudinal directionof the physical dispenser pump.

The first aspect of this disclosure shows the dispenser pump 10 thatdefines the longitudinal or centre axis CD. The dispenser pump 10comprises a housing 20 adapted for being held fixed/stationary/axiallyin relation to the container 3 after assembly to the container by meansof the closure 4. The housing defines an inner pump chamber 21 with aninlet 22 configured for fluid communication with the inside of thecontainer and an outlet 23 configured for fluid communication with theoutside of the container 3. The dispenser pump 10 comprises at least onespring 30 and a movable actuator 40. The dispenser pump 10 comprises aspout 41 configured for fluid communication with the inside of the pumpchamber 21 via its outlet 23. In some embodiments, the spout 41 ispreceded by one or more check valves 50 to facilitate the functionalityof the spout when subjected to negative or suction pressure when product2 is sucked in. The actuator 40 and the spout 41 is in one embodiment asshown on FIGS. 1A to 5C and 7A to 7C together with a button arrangement43 one common movable unit or module, i.e. spout 41 moves together withthe actuator 40 when the actuator is moved or pressed. The actuator 40and the spout 41 are in another embodiment as shown on FIG. 6 separateentities, i.e. only the actuator 40 is movable together with the buttonarrangement 43 as one common movable unit/module, i.e. the spout 41 doesnot move together with the actuator 40 and/or its button arrangement 43when the actuator is moved/pressed, instead the spout isfixated/stationary. In FIG. 6 , the actuator 40 is provided with arounded end 44, similar to a button to be pushed or pressed when thedispenser pump 10 is operated. The spout 41 comprises the final/lastoutlet for dispensing product 2 out of the container 3 into thesurrounding; this dispensing of product is visualized by an arrow inFIGS. 1C, 2C, 3C, 4C, 5C and 7C. The movable actuator 40 comprises apiston rod 42 fixedly connected to the actuator and arranged forreciprocating motion inside the inner pump chamber 21 when the actuatormoves up and down, visualized with a bidirectional straight arrow inFIGS. 1C, 2C, 3C, 4C, 5C and 7C. The actuator 40 is configured formoving together with its piston rod 42 reciprocally relative the housing20 between a first or start position as shown in FIGS. 1A to 4C and anend or intermediary or activated position (not shown) to pump product 2out of the container 3 via its opening 3A. This is done by firstly usinga pressing force applied by a user to the actuator 40 moving theactuator from its first/start position towards the housing 20 andclosure 4 into its end and/or intermediary and/or activated positionwith its piston rod 42 moving inside the inner pump chamber 21 along thelongitudinal dispenser pump axis CD as a first stroke for priming. Then,subsequently an elastic force of the spring 30 being compressed by thisfirst stroke returns the actuator 40 with its piston rod 42 from the endand/or intermediary and/or activated position back to the first positionafter the pressing force is removed while/as the spring is relaxing.Actuator 40 is configured for moving together with its piston rod 42reciprocally relative the housing 20 between a first or start positionas shown in FIGS. 1A to 7C and an end or intermediary or activatedposition (not shown) to pump product 2 out of the container 3 via itsopening 3A. The spout 41 does not move together with actuator 40 and/orits piston rod 42/button arrangement 43, 44 in the embodiment shown inFIG. 6 when the actuator is moved/pressed, instead the spout standsstill in the vertical direction, i.e. spout is verticallyfixated/stationary.

After this first stroke performed by the user of the dispenser pump 10and its actuator 40 as explained above down in the downwards directionvisualized by the downward pointing arrow of the bidirectional arrow ofFIGS. 1C, 2C, 3C, 4C, 5C and 7C and the return of the actuator 40 backup in the upwards direction visualized by the upwards pointing arrow ofthe bidirectional arrow of FIGS. 1C, 2C, 3C, 4C, 5C and 7C, the innerpump chamber 21 has been filled via its inlet 22 by product 2 from thecontainer 3 via its opening 3A. In some applications, more than onestroke is required to fill the inner pump chamber 21 for priming.

The spring 30 has in some or all embodiments a helical shape as shown inFIGS. 1C, 2C, 3C, 4C, 5C, 7C and 9A to 10D. The spring 30 is made ofrecyclable plastics material in some or all embodiments. The spring 30is configured for arrangement outside the container 3 and/or the pumphousing 20 and/or the inner pump chamber 21 and/or the piston rod 42,e.g. shown in embodiments of FIGS. 1A to 2C. The spring 30 is configuredfor being arranged at least partly or fully/wholly inside container 3and/or the pump housing 20 and/or the inner pump chamber 21 and/or thepiston rod 42, e.g. see embodiments of FIGS. 3A to 5C. In someembodiments, e.g. in FIGS. 1A to 1C, 2A to 2C, 3A to 3C, 4A to 4C, 5A to5C, and 7A to 7C, the pump chamber 21 is configured for being locatedbelow the closure 4. In some embodiments, e.g. in FIGS. 3A and 3B and asshown in FIGS. 3C, the spring 30 is placed fully/wholly inside the innerpump chamber 21. In some embodiments, e.g. in FIGS. 3A and 3B and asshown in FIGS. 3C, the spring 30 is placed fully/wholly inside thehousing 20. In some embodiments, e.g. in FIGS. 4A, 4B, 5A, 5B and asshown in FIGS. 4C and 5C, the spring 30 is placed at least partly insidethe housing 20. In some embodiments, e.g. as in FIGS. 4A, 4B, 5A, 5B andas shown in FIGS. 4C and 5C, the spring 30 is placed at least partlyinside the housing 20 and at least partly outside the housing 20. Insome embodiments, e.g. as in FIGS. 4A and 4B and as shown in FIGS. 4C,the spring 30 is placed inside the piston rod 42. In some embodiments,e.g. in FIGS. 4A and 4B and as shown in FIGS. 4C, the spring 30 isplaced inside both the housing 20 and the piston rod 42 as the pistonrod is configured to move inside the housing. Here, the piston rod 42 ishollow and somewhat wider than in the other shown embodiments. Inembodiments of FIGS. 1A to 4C, the piston rod 42 is tubular and formspart of a fluid channel for outflow of product 2, and is, in otherembodiments, solid. In some embodiments (not shown), the fluid channelcould be arranged outside the piston rod to enable flow of product 2 outof the dispenser pump 10.

As shown in the embodiments of FIGS. 1A to 4C, the spring 30 is relaxedwhen the actuator 40 is in its first/start position before its firstuse/stroke. In other embodiments, the spring 30 is under compressionwhen the actuator 40 has returned to its start position after its firstuse/stroke from the start position to the end/activated position andback to the first/start position. In some embodiments, this first strokeis a priming stroke and/or a first priming stroke if more than onestroke is required for enabling filling the inner pump chamber 21 withproduct 2 until the last priming stroke filling up the dispenser pump 10fully. In some embodiments, the spring 30 is under compression when theactuator 40 is in its first/start position before its first use/stroke,i.e. the spring is pre-compressed or pre-loaded, e.g. at/during/byassembly into the dispenser pump 10 or before assembly therein or aftera stroke being a first stroke and/or a first or second or third orfourth or one of more priming strokes and/or a full-pump/-ing strokeafter the priming is finalized by filling up the pump chamber 21 and theremaining parts of the dispenser pump 10 required for continuous and“full”/normal dispensing of product 2.

In some embodiments, such as in FIGS. 1A, 1B, 2A, 2B and shown in FIGS.1C and 2C, the spring 30 is configured for being arranged between thecontainer 3, the pump housing 20, the chamber 21, the closure 4 and thespout 42 as seen in the axial or longitudinal direction CD of thedispenser pump 10. In some embodiments, such as in FIGS. 3A, 3B andshown in FIG. 3C, the spring 30 is configured for being arranged belowthe closure 4 as seen in the axial or longitudinal direction CD of thedispenser pump 10. In some embodiments, such as in FIGS. 2A, 2B, 3A, 3Band shown in FIGS. 2C and 3C, the spring 30 is configured for beingarranged inside the container 3 and/or pump housing 20 and/or pumpchamber 21 at a distance D from the closure 4 as seen/measured in theaxial or longitudinal direction CD of the dispenser pump 10.

The dispenser pump 10 comprises one or more check valves 50 made of arecyclable plastics material. The check valve 50 is shown in the shapeof a rounded element, such as a sphere or ball in the embodiments ofFIGS. 1C, 2C, 3C and 4C, but could in other embodiments be differentlyshaped. The check valve 50 is configured for being arranged at/adjacentthe pump chamber inlet 22. The dispenser pump 10 comprises one or moredischarge valves 51 made of a recyclable plastics material andconfigured for being arranged at the spout 41. The discharge valve 51could in other embodiments be differently shaped to fit materials andneeds. The check valve 50 is configured for being closed, when the userpresses down on the actuator 40 after the first priming stroke(s) asexplained above is/are performed, thereby moving the piston rod 42towards the pump chamber inlet 22 while compressing the spring 30 andthereby forcing product 2 out of the inner pump chamber 21 upwardstowards the spout opening and the discharge valve for dispensing productout of the outlet 23, and for being opened when the user releases theactuator/removes the pressing force by means of the spring 30 returningthe piston rod 42 and actuator 40 back into the first/start positionwhile drawing out product 2 inside the container 3 via the pump chamberinlet 22 into the pump chamber to fill it, while closing the dischargevalve(s) 51 and sealing or closing the pump chamber 21 to preventproduct from flowing back into the container 3, making the dispenserpump 10 ready for subsequent pumping/dispensing.

In some embodiments, such as in FIGS. 1A to 4C, the dispenser 10comprises a dip tube 60 made of a recyclable plastics material. The diptube 60 is configured to extend from the inlet 22 of the pump chamber 21with an adaptable length DTL into a predetermined depth DC of thecontainer 3 depending on the type/size/length/height of the container.The dispenser 10 is applicable to differently sized and formed container3. In some embodiments, e.g. shown in FIGS. 1A to 4C, a free end 60A ofthe dip tube 60 configured for receiving product 2 is cut into apredetermined shape and/or angle and/or size. In some embodiments, thefree end 60A of the dip tube 60 comprises predefined markings and/ornotches that aid in cutting at the correct angle and/or at the correctlevel/length and/or comprises another shape at the free end 60A, e.g.comprising a decreasing/narrowing size/diameter the closer the end,which decreasing size/diameter in some embodiments are marked by notchesor the like. The dip tube 60 is at least partly tubular in someembodiments and/or in some embodiments a rounded or cylindrical tubealong its whole length.

The second aspect of this disclosure shows in FIGS. 9A to 10D a spring30 for a dispenser pump 10 according to any preceding embodiment/aspect,which spring 30 has a helical shape and is made of a recyclable plasticsmaterial and is at least partly shaped as a cylindrical helical springand/or non-cylindrical helical spring. In the second aspect of thisdisclosure, there is a spring 30 for a dispenser pump 10 according toany preceding embodiment/aspect, which spring 30 has a helical shape andis made of a recyclable plastics material and is at least partly shapedas a non-cylindrical helical spring. In the second aspect of thisdisclosure, there is shown a spring 30 for a dispenser pump 10 accordingto any preceding embodiment and/or aspect, which spring 30 has a helicalshape and is made of a recyclable plastics material and is at leastpartly shaped as a cylindrical helical spring and a non-cylindricalhelical spring.

In some embodiments of the first and/or second aspect of thisdisclosure, the spring 30 is configured with and/or for manufacture intoa non-cylindrical shape being substantially symmetrical or symmetricalaround its centre axis CS. The spring centre axis CS is shown in allfigs. as substantially or perfectly aligned with the longitudinal axisCD of the whole dispenser pump 10, but, in some embodiments not shown,the axes CS and CD are not substantially or perfectly inalignment/parallel with each other, i.e. in some embodiments they extendin deviating directions and/or extend at an angle relative each other.

The spring 30 is in some embodiments configured with and/or formanufacture into the shape of a helically winded wire 33 with apolygonal cross-section 34 as seen in FIGS. 1C, 2C, 3C, 4C, 8A, 8B and9A to 9D, which preferably is solid but could be at least partly hollow.FIGS. 8A, 8B show some different possible and suitable cross-sections 34and I-VIII of the helically winded spring wire 33 of the spring 30. Inviews I, II and III of FIG. 8A and in corresponding views in 8B, thespring wire cross-section 34 is shown in polygonal shapes having foursides extending at perpendicular angles to each other, such asparallelepipeds with perpendicular angles at their corners or made up ofperpendicular parallelograms. In views I and II of FIG. 8A and incorresponding views in 8B, the spring wire cross-section 34 is shown inrectangular shapes. In view I of FIG. 8A and in corresponding views in8B, the spring wire cross-section 34 is shown as a standing rectangle.In view II of FIG. 8A and in corresponding views in 8B, the spring wirecross-section 34 is shown as a rectangle lying down. These rectanglesmay have different widths W and heights H. In view III of FIG. 8A and incorresponding views in 8B, the spring wire cross-section 34 is shown asa square, e.g. a cuboid or a parallelepiped with perpendicular angles atthe corners or made up of perpendicular parallelogram with sides of thesame length.

The spring 30 is in some embodiments configured with and/or formanufacture into the shape of a helically winded wire 33 with atriangular cross-section 34 as shown in view IV of FIG. 8A and incorresponding views in FIG. 8B with a width or base W and a height H.Here, the triangle is shown in an embodiment with equilateral sides,wherefore its size or length of its width or base W is the same as thelength of the other two sides but could in other embodiments benon-equilateral and/or have one perpendicular angle meaning that thelength of each cathetus of right triangle cross-section 34 wouldcorrespond to W and H, respectively. In some embodiments, the triangle34 pointing to the right in FIG. 8A and in corresponding views in FIG.8B radially away from the spring centre axis CS could in otherembodiments point to the left radially inwards towards the spring centreaxis CS or at least point in a direction deviating from a perfect radialdirection of the spring 30.

In some embodiments as seen in views V and VI of FIGS. 8A andcorrespondingly in FIG. 8B, the spring 30 is configured with and/or formanufacture into the shape of a helically winded wire 33 with a conicalcross-section 34. In view V of FIG. 8A and in corresponding views inFIG. 8B, the conical spring wire cross-section 34 is arranged with itsapex directed radially inwards towards the spring centre/longitudinalaxis CS. In view VI of FIG. 8A and in corresponding views in FIG. 8B,the conical spring wire cross-section 34 is arranged with its apexdirected radially outwards from the spring centre/longitudinal axis CS.Spring cross-section 34 has an angle α defining the conicity of theconical spring wire cross-sections of views V and VI in FIG. 8A and incorresponding views in FIG. 8B and/or the deviation of the sides of thetriangular spring wire cross-section of view IV in FIG. 8A and incorresponding views in FIG. 8B, which angle α is configured for being atleast between 1° and 10° in some embodiments, and preferably between 1°and 5° and/or about between 2° and 4°, most preferred about 2°. Theangle α improves manufacture by moulding due to fulfilling suitablerelief angles. Furthermore, this angle α could in some embodiments bedifferent on the upper side compared to the lower side of the springwire cross-sections 34 of views IV, V and VI in FIG. 8A and incorresponding views in FIG. 8B, but is preferably substantially the sameor exactly the same (within the tolerances of the technical field). Inviews V and VI in FIG. 8A and in corresponding views in FIG. 8B, onlythe upper side of the conical cross-sections 34 are shown with the angleα, which of course also is present at the lower side as shown for thetriangular version in view IV. In some embodiments, the angles α do nothave to be the same. In some embodiments, there could be only one angledside, e.g. angle α could exist only on the upper side as shown in FIG.8A and in corresponding views in FIG. 8B, views V and VI or angle αcould exist only at/on/along the lower side where the width W is definedopposite the shown upper location of angle α. In other words, angle αcould be 0° or 180° relative the horizontal direction/plane or thedirection of the width at the lower or upper side but be 2° at theopposite side, i.e. the upper/top or lower/bottom side of thecross-sections 34 shown in views V and VI in FIG. 8A, see correspondingviews in FIG. 8B could be straight and not angled with angle α.

In some embodiments, the spring 30 is configured with and/or formanufacture into the shape of a helically winded wire 33 with apolygonal cross-section 34, see FIGS. 8A, 8B and 9A to 9D, having a/anwidth/extension W in the radial direction of the spring being less,equal or larger than its height/thickness/extension H in theaxial/longitudinal direction of the spring. In the embodiment with equalmeasures, i.e. dimensions, the width W is the same as the height H, i.e.W=H, such as a quadratic cross-section 34. In the embodiment withdiffering measures, i.e. the width W is less or larger than the heightH, i.e. W<H or W>H, such as a standing or lying down rectangularcross-section 34.

In some embodiments, such as in view V of FIG. 8A and in correspondingviews in FIG. 8B, the conical cross-section 34 of the spring 30 pointsto the left in FIG. 8A and in corresponding views in FIG. 8B radiallyinwards and towards the spring centre axis CS. In some embodiments, suchas in view VI of FIG. 8A and in corresponding views in FIG. 8B, theconical cross-section 34 of the spring 30 points to the right radiallyoutwards and away from the spring centre axis CS. In some embodiments,the conical cross-section 34 could at least point in a directiondeviating from a perfect radial direction of the spring 30. The spring30 is in some embodiments a helical spring or even a conical helicalspring comprising any of the above wire cross-sections 34, e.g.rectangular or triangular or conical wire cross-sections or acombination of two or more such wire cross-sections 34 depending on theapplication of the spring 30 in a suitably configured dispenser pump 10.The spring 30 is, in some embodiments, at least partly shaped as aconical helical spring 30. In some embodiments, the spring 30 is atleast partly shaped as a straight helical spring 30, see FIGS. 1A to10D. The spring 30 is at least partly shaped as a conical helical spring30 with its apex arranged for facing towards the container opening 3A insome embodiments. The spring 30 is at least partly shaped as a conicalhelical spring 30 with its apex arranged for facing towards thecontainer bottom 3B in some embodiments. The spring 30 is at leastpartly shaped as a conical helical spring 30 with its apex configuredfor facing towards the spout 41 in some embodiments. In someembodiments, the spring 30 is a straight helical spring along its fulllength or a conical helical spring along its full length or acombination of straight and conical along its length with varyingdistribution or length sections along the length, e.g. a straightsection being longer or shorter than the conically shaped section of thespring length.

According to some embodiments, the spring 30 when comprising and/orbeing configured with and/or for manufacture into the shape of ahelically winded wire 33 with a conical cross-section 34 has asimplified manufacture, e.g. by enabling angle of clearance, see views Vand VI of FIG. 8A and in corresponding views in FIG. 8B, if moulding isused, e.g. by providing the mould with a smooth centre axle and twomould halves that are able to move perpendicular to the centre axle ofthe mould and when the mould halves are opened spring 30 is easilyremoved from the mould.

In FIG. 1C, the spring 30 and its end 32 are held or guided by beingheld from the outside by a circumferential flange and from the inside bya center guide at the upper side/top of closure 4 lowering the height ofthe dispenser pump 10 outside/externally of the container 3.

In FIG. 2C, the spring 30 and its end 32 are held or guided by beingheld from the outside by a circumferential flange and from below by acentre guide at the upper side/top of the closure 4, which may increasethe height of the dispenser pump 10 outside/externally of the container3 while providing a greater design freedom for the spring and alsoproviding space for an inner smaller spring 30.

In FIG. 3C, a part of the spring 30 is arranged inside the container 3decreasing the height of the dispenser pump 10 outside the container andenables the same design as prior art dispensers. The piston rod 42configured for leading the product 2 as an inner channel is not arrangedwithin the spring 30 in its longitudinal direction, this providesadditional freedom in design of the inner diameter of the spring 30.

In FIG. 4C, a part of the spring 30 is arranged inside container 3decreasing the height of the dispenser pump 10 outside the container andenables same design as prior art dispensers.

The spring 30 comprises a first end 31 and a second end 32 as shown inFIGS. 1A to 4C. In some embodiments of the spring 30, as shown in FIGS.1C, 2C, 3C and 4C, at least one of its ends 31 or 32 is flattened and/orface grinded. As shown in FIGS. 1C, 2C, 3C and 4C, some embodiments ofthe spring 30 has both its first end 31 and second end 32 flattenedand/or face grinded. In some embodiments of the spring 30 shown in FIGS.1A to 7C, one or more or all of its ends 31, 32 are flattened and/orface grinded in a plane being perpendicular to the center/longitudinalaxis CS of the spring.

In FIG. 8A and in corresponding views in FIG. 8B, the cross-sections 34of a spring wire 33 of one or more springs 30 are also shown with anoval and/or elliptical cross-section 34 in views VII and VIII. Thesecross-sections are alternative ones. In some embodiments, thecross-section 34 could be any combination of one or more of non-roundedones as shown in views I to VI of FIG. 8A; in corresponding views inFIG. 8B, and upper views of 9A to 9D and rounded ones, such as thecircular and/or oval and/or elliptical ones shown in views VII to VIIIof FIG. 8A and in corresponding views in FIG. 8B and upper views ofFIGS. 10A to 10D.

The cross-sections 34 shown in views V, VI, VII and VIII in FIG. 8A; incorresponding views in FIG. 8B and upper views of FIGS. 9A-9D could berearranged or reorientated by being turned 90° to theleft/counterclockwise or right/clockwise, whereby the cross-sections 34of views VII and VIII and upper views of FIGS. 9A-9D then would be“standing up” instead of laying down, and the apexes of the conicalcross-sections 34 of views V and VI in FIG. 8A and in correspondingviews in FIG. 8B would point either upwards towards end 31 of the springor down towards the other spring end 32 instead of pointing eitheroutwards from or inwards towards the center axis CS of the spring 30 asshown.

In FIG. 6 , the dispenser pump 10 comprises a fixed nozzle, i.e. thespout 41 is fixated to the closure 4 of the dispenser pump. Thedispenser pump 10 comprises a movable/operable button or actuatorarrangement 43 arranged above the spout 41. The actuator comprises theoperable button arrangement 43 that in turn comprises an upper part orface or end 44 at/on which a user presses when dispensing as explainedabove. The face end 44 is shaped and made larger than the part below forbetter and smoother feel when pressing on it. The face end 44 has arounded shape and/or a mushroom head shape as shown in FIG. 6 . Theoperable face 44 is operatively connected to and biased by the spring 30upwards in the direction of the upper arrow head of the double arrow inFIG. 6 . The user presses/pushes on the actuator face 44 and its buttonarrangement 43 in the direction of the lower arrow head of FIG. 6whereby the button 43 and its face 44 moves down from its shown firstposition towards the spout 41 and a second and/or end and/orintermediary position (as for the other embodiments) to operate thedispenser pump 10 as explained above for the other embodiments and whenthe user stops pushing, i.e. ends the pressing force on the buttonarrangement 43, the spring 30 urges the actuator 40 with button 43 andits face 44 upwards back to return it to its start position as shown inFIG. 6 .

In some embodiments, the spring 30 is being configured for manufactureby injection moulding and/or machining.

In FIGS. 7A, 7C and 8B, an embodiment of the spring 30 is shown as atwin spring 30. This spring could comprise at least two springs 30. Onespring 30 is configured for being arranged inside another spring 30. Afirst spring 30 could have a size being adapted for fitting insideand/or being received within a second spring 30. Such a first spring 30could have a size being adapted for fitting/being received within such asecond spring 30. Such springs 30 could have essentially the same or thesame length, i.e. spring length SL. A spring 30 made up of more than oneseparate spring is advantageous for long strokes. Such springs 30 couldbe arranged concentrically relative each other when one spring is placedwithin the other as seen in FIG. 7C. One advantage in having two springsas a twin spring 30, where one smaller spring 30 is arranged within alarger spring 30 as in FIG. 7C is that larger strokes/stroke length isachieved while minimizing the total volume occupied by the springs, i.e.the plastic material use and/or consumption is optimised in relation toavailable space for the springs 30. In some embodiments, see FIGS. 7Cand 8B, by providing the spring 30 of the present disclosure as a twinor double spring with one smaller spring placed or arranged within orinside a larger one, the length of the spring 30 is reduced by aboutbetween 10-40% or about between 15-30% or preferably about 20% comparedto using a single spring. By providing the spring 30 as a twin or doublespring with one smaller spring placed or arranged within or inside alarger one, the total weight of the spring 30 is not increased comparedto using a single spring. To avoid having the springs 30 of a twinspring entangled, one spring has its spring wire in right winding is andthe other spring has its spring wire in a left winding, i.e. the springshave their wires winded in different directions, i.e. similar to oneright-hand thread and one left-hand thread.

In a further preferred aspect of the disclosure, the dispenser pump 10has a locked condition in which the piston rod or plunger 42 and thebutton arrangement 43 are held axially fixed and hence non-operable.This locking action requires the button arrangement 43 and its face endor head 44 to be depressed and turned at the same time into a lockingmode, whereafter any undesirable leakage or dribble of product 2 fromthe spout 41 and/or swinging spout/nozzle if not a fixated one. Thislocking also prevents any undesired leakage or dispensing when thedispenser pump 10 is transported with a container 3 or the like or whenon display in a shop or the like full with product. The unlocking isdone in a reversed manner.

In some or all embodiments, the guiding of the reciprocating movement ofthe piston rod 42 is optimised/improved by the adapting of the locationand/or positioning and/or size/dimensions and/or diameter of the closure4 and its surfaces through which and in contact with the piston rod 42moves and a free end 42A of the piston rod. The other end of the pistonrod 42 is arranged closer to the spout 41. This adaptation of theguiding surfaces and their separation is visualized by a guiding lengthor distance GL as shown to the right in FIGS. 1C, 2C, 3C, 4C, 5C and 7C.This separation of the guiding surfaces at the closure 4 and the freeend 42A of the piston rod 42 stabilizes the reciprocating movement ofthe piston rod and the operability of the whole dispenser pump 10 whenused.

In FIG. 7C, the small view of FIG. 8B to the right discloses the wire 33and its double cross-sections 34 side-by-side corresponding to theembodiments of FIG. 8A but in twin or double versions. Here, the innerspring 30 or outer spring 30 could be the left cross-section or theright cross-section 34 of the twin-spring. As the inner spring 30preferably is smaller than the outer spring 30, the left cross-sectionis smaller in these views to correspond to this arrangement of a smallerspring inside a larger spring. A spring 30 with larger diameter forms aninner cavity into which a spring 30 with smaller diameter isfitted/introduced.

In some embodiments, see FIGS. 1A-1C, 2A-2C, 5A-5C, 7A and 7C, thespring 30 is not in physical contact with the product 2 providing alarge freedom in choosing the plastic material(s) to make the spring asthe plastic material(s) does/do not have to fulfill the strictrequirements regarding food product 2 being in physical contact withplastics material(s). Another advantage is that there is no risk for theproduct 2 to be contaminated by the plastics material(s). Yet anadvantage is that there is no risk that the product 2 affects theplastics material(s) negatively, such as deterioration or decay due tocaustic or fraying or corrosive effect on the spring 30 and the plasticmaterial(s) making up the spring such that the mechanicalcharacteristics of the spring is degraded or worsened.

The spring wire 33 comprises a first spring wire end 35 and a secondspring wire end 36, see FIGS. 1C, 2C, 3C, 4C, 5C, 7C, and 9A to 10D. Oneor more of the spring ends 31, 32 of the spring 30 according to thepresent disclosure comprises at least one free spring wire end 35, 36.Preferably, each of the spring ends 31, 32 of the spring 30 according tothe present disclosure comprises one free spring wire end 35, 36.

In FIGS. 9A to 10D, embodiments of springs 30 comprising varying shapesof spring wire cross-sections 34 and/or embodiments of springs 30comprising differently designed spring ends 31, 32 and spring wire ends35, 36 are shown. In FIGS. 9A to 9D, embodiments of springs 30comprising non-round and/or polygonal and/or parallelepipedic and/orsquare and/or quadratic and/or rectangular and/or conical shapes ofspring wire cross-sections 34 are shown. In FIGS. 10A to 10D,embodiments of springs 30 comprising round and/or circular and/or ovaland/or elliptical shapes of spring wire cross-sections 34 are shown.

In FIGS. 9A and 10A, embodiments of springs 30 comprising one or moreopen spring ends 31, 32 are shown. An open end 31, 32 means that thelast wire ends 35, 36 of the spring 30 are open and have space or pitchin-between them, i.e. the coils or windings of the last wire ends 35, 36of the spring wire 33 at the ends 31, 32 do not touch or are in contactwith previous coils/windings. This is an advantage if to provide moreforce out of a spring 30 but there is not enough space for it. Anopen-ended spring 30 makes all of the spring coils active and the springworks more efficiently getting more usable spring force out of thespring. This kind of spring end 31, 32 requires that the spring 30 bearranged in a hole or on a shaft to ensure its function. There is lesscost for this type of spring end 31, 32 being open thus making it aneconomical choice.

In FIGS. 9B and 10B, embodiments of springs 30 comprising one or moreclosed spring ends 31, 32 are shown. In FIGS. 9C and 10C, embodiments ofsprings 30 comprising one or more closed ground spring ends 31, 32, 35,36 are shown. In FIGS. 9D and 10D, embodiments of springs 30 comprisingone or more double closed ground spring ends 31, 32 are shown.

In some embodiments, see FIGS. 9B to 9D and 10B to 10D, the spring 30comprises at least one closed spring end 31, 32. In some embodiments,see FIGS. 9B to 9D and 10B to 10D, the spring 30 comprises two closedspring ends 31, 32, i.e. each spring end is closed. A closed spring end31, 32 means that at least the last coil or winding of the end 35, 36 ofthe wire 33 at an end 31, 32 of the spring 30 is in contact with ortouching the previous coil or winding of the wire 33, but, at the sametime, these coils and windings of the wire ends 35, 36 of the wire 33are not hindered from moving. Hence, these coils and windings of thewire end 35, 36 of the wire 33 of a closed spring end 31, 32 are able orfree to move, e.g. linearly and/or radially and/or in a rotative ortwisting motion, in relation to each other, e.g. along each other and/orradially relative each other and/or the spring 30 when the spring isloaded and unloaded, see the cross-sectional views of FIGS. 9B to 9D and10B to 10D. In other words, a closed spring end 31, 32 means that thespring wire 33 and its last wire end 35, 36 are not fixed or fixated orheld stationary relative the previous coil or winding of the wire andare only abutting or laying or closing against the previous coil orwinding of the wire with no free space or gap or distance between themseen in the longitudinal or axial direction of the spring 30, see thecross-sectional views of FIGS. 9B to 9D and 10B to 10D. In someembodiments, one or more coils or windings of the spring wire 33 at orending at/in one or more spring and wire ends 31, 32, 35, 36 of thespring 30 is/are closed. In some embodiments, one or more of the lastcoils or windings of the spring wire 33 at/in one or more spring andwire ends 31, 32, 35, 36 of the spring 30 is/are closed. In theembodiments of FIGS. 9B to 9D with spring wire 33 with a closed wire end35, 36 at each spring end 31, 32 and squared cross-section 34, thisdesign is the most economical of all spring end types and works well forstanding up normal size springs. However, closed and polygonal and/orsquared and/or rectangular and/or quadratic ends 31, 32, 34, 35, 36 ofthe wire 33 do not work well if using a spring 30 with a small outerdiameter, in that case, closed and ground spring ends 31, 32 must bechosen if the spring 30 is to be able to stand up vertically straightwithout any support such as the flange at enclosure 4.

In some embodiments, see FIGS. 9C to 9D and 10C to 10D, the spring 30comprises at least one closed and grounded spring end 31, 32. In someembodiments, see FIGS. 9C to 9D and 10C to 10D, the spring 30 comprisestwo closed and grounded spring ends 31, 32, i.e. each spring end isclosed and grounded. Here, the last spring wire coil or winding of oneor more spring ends 31, 32 of the spring 30 is closed and ground flattouching with the previous spring wire coil/winding. A closed and groundend 31, 32 of a spring 30 helps the spring stand up vertically straight.This type of spring end 31, 32 lets the spring 30 stand up straight andgives an even surface of contact to the spring base. This type of springend 31, 32 of a spring 30 is a good choice for precision springs but aremore costly than only closed and squared ends, i.e. squaredcross-section 34, as additional labour needs to be performed to grindthe ends 31, 32 of the spring 30 flat.

In some embodiments, see FIGS. 9D and 10D, the spring 30 comprises atleast one double closed spring end 31, 32. In some embodiments, seeFIGS. 9D and 10D, the spring 30 comprises two double closed spring ends31, 32, i.e. each end is double closed. Here, the last two spring wirecoils or windings on each spring end 31, 32 are closed to help stabilizethe top and bottom of the spring 30. Double-closed ends 31, 32 aids thefooting of the spring, in particular when the spring 30 comprises alarge outer measure/diameter coupled with a fine or small diameter forthe spring wire 33 when compressed or traveling to stacked height whereall the spring wire coils or windings are in contact, i.e. touching. Adouble-closed end 31, 32 keeps a spring end 31, 32 and wire ends 35, 36from sliding over or slipping under the previous coil/winding, and keepsthe spring wire coils/windings stacked up on top of each othercorrectly. This type of spring ends 31, 32 is a great economical choiceto prevent buckling and stabilizes the spring 30.

In some embodiments, see FIGS. 9D and 10D, the spring 30 comprises atleast one double closed and grounded spring end 31, 32. In someembodiments, see FIGS. 9D and 10D, the spring 30 comprises two doubleclosed and grounded spring ends 31, 32, i.e. each end is double-closedand grounded. This type of spring ends 31, 32 utilises the advantages ofboth double-closed type of spring and wire ends 35, 36 and grounded typeof spring and wire ends.

In some embodiments, the recyclable plastic material is within the samefamily of plastic, e.g. polyolefin. In some embodiments, the recyclableplastic material is Polyamide. In some embodiments, the recyclableplastic material is a combination or mixture of Polyamide andPolypropylene. In some embodiments, the recyclable plastic material is100% Polyamide. In some embodiments, the recyclable plastic material isa combination or mixture of 90 to 98% of Polyamide (percentage byweight) and 2 to 10% of Polypropylene (percentage by weight). In someembodiments, the recyclable plastic material comprises up to 40% glassfibre (percentage by weight). In some embodiments, the recyclableplastic material is a combination of up to 40% glass fibre (percentageby weight) and other plastic material(s), such as Polyamide and/orPolypropylene according to any of the other embodiments. In someembodiments, the recyclable plastic material is a mixture of up to 40%glass fibre (percentage by weight) and other plastic material(s), suchas Polyamide and/or Polypropylene or a combination of up to 40% glassfibre (percentage by weight) mixed with other plastic material(s), suchas Polyamide and/or Polypropylene according to any of the otherembodiments. In some embodiments, the recyclable plastic materialcomprises up to 40% glass fibre (percentage by weight) besides theamount of other plastic material(s), such as Polyamide and/orPolypropylene according to any of the above embodiments.

The person skilled in the art realizes that the present disclosure isnot limited to the preferred embodiments described above. The personskilled in the art further realizes that modifications and variationsare possible within the scope of the appended claims. For example,disclosed spring 30 is applicable for any dispenser pump having a movingspout 41 or fixated/stationary one. If the spring 30 is applied in adispenser pump 10 with a fixed spout or nozzle 41, the dispensing ofproduct 2 is achieved by leading the product along another path thanshown in the disclosed figs. The twin spring 30 of FIGS. 7A, 7C and 8Bcould be made up of springs 30 with different cross-sections, e.g. theinner smaller helical spring 30 could be windings of a wire with aquadratic cross-section 34 as shown in FIGS. 1C, 2C, 5C, 7C and 8B whilethe outer larger helical spring 30 would not have a quadratic wirecross-section as shown in FIGS. 7C and 8B, instead outer spring 30 couldhave a rectangular wire cross-section 34 (e.g. “standing up”) as shownin FIGS. 3C and 4C or vice versa. In some embodiments, the twin spring30 of FIGS. 7A, 7C, 8A and 8B could be made up of springs 30 with one ormore different plastic materials. In some embodiments, the twin spring30 of FIGS. 7A, 7C, 8A and 8B could be made up of springs 30 withdifferent cross-sections and one or more different plastic materials. Insome embodiments, the cross-section 34 of the inner and/or the outerhelical spring 30 could be any combination of one or more of non-roundedones as shown in views I to VI of FIG. 8A and FIGS. 9A to 9D and roundedones, such as the circular and/or oval and/or elliptical ones shown inviews VII to VIII of FIG. 8A and FIGS. 10A to 10D. In some embodiments,the spring 30 could comprise a combination of one open spring end 31, 32and one closed end 31, 32. In an embodiment, the spring 30 couldcomprise a combination of one open spring end and one closed andgrounded spring end 31, 32. In some embodiments, the spring 30 couldcomprise a combination of one open spring end and one double closed andgrounded spring end 31, 32. In an embodiment, the spring 30 couldcomprise a combination of one closed spring end 31, 32 and one closedand grounded spring end. In an embodiment, the spring 30 could comprisea combination of one closed spring end 31, 32 and one double closedspring end. In some embodiments, the spring 30 could comprise acombination of one closed and grounded spring end 31, 32 and one doubleclosed spring end. In an embodiment, the spring 30 could comprise acombination of one closed spring end 31, 32 and one double closed andgrounded spring end. In an embodiment, the spring 30 could comprise acombination of one closed and grounded spring end 31, 32 and one doubleclosed and grounded spring end.

In some embodiments, the spring(s) 30 are configured such that theycannot be overloaded or overstressed, this being accomplished in thatwhen the tension or stress in the plastic material(s) of the spring(s)30 reaches about 60% or 60% of the yield point or yield strength for theplastics material(s), the spring(s) 30 bottom(s) meaning that thespring(s) is/are fully compressed such that all the spring wire windingsof the wire 33 are in contact, i.e. closed, with no free space betweenthem, and cannot be deformed more. This makes the spring 30 more robustand less prone for fatigue failure and/or creep strain/rupture.

Additionally, variations to the disclosed embodiments can be understoodand effected by the skilled person in practicing the claimed disclosure,from a study of the drawings, the disclosure, and the appended claims. Afree wire end 35, 36 of the wire 33 of the spring 30 means the end ofthe last coil or winding of the wire 33 at a spring end 31, 32 of thespring. This free wire end 35, 36 of the spring 30 is not hindered frommoving. Hence, this free wire end 35, 36 and/or last coil/winding is notfixed or fixated or held stationary in relation to the previous coil orwinding of the wire 33. In other words, the definition of free in “freewire end” 35, 36 is not defined as a wire end only being free fromcontact with any other coil or winding of the wire 33 as shown in theembodiments of FIGS. 9A and 10A, i.e. this wire end 35, 36 is alsodefined as free to move even though that this wire end 35, 36 in thelast coil or winding of a spring end 31, 32 is at least partially inphysical contact with a previous coil or winding of the wire 33 as shownin the embodiments of FIGS. 9B, to 9D and 10B to 10D. One or more freewire ends 35, 36 and/or coils/windings at/in one or more spring ends 31,32 of any or all the embodiments of the spring 30 according the presentdisclosure, including the double-closed ones in the embodiments of thespring 30 in FIGS. 9D and 10D, is/are free to move in relation to eachother and not fixed, such as in an integrated collar at a spring end 31,32.

1. A dispenser pump (10) for manual dispensing of product (2) in fluidform out of a container (3) and for leakproof assembly to an opening(3A) of the container by means of a closure (4), the dispenser pumpdefining a longitudinal axis (CD) and comprising a housing (20) adaptedfor being held fixed/stationary/axially in relation to the containerafter assembly, the housing defining a pump chamber (21) with an inlet(22) configured for fluid communication with the inside of thecontainer, the dispenser pump comprising at least one spring (30), anactuator (40), a spout (41) being configured for fluid communicationwith the inside of the pump chamber, and a piston rod (42) fixedlyconnected to the actuator and arranged for reciprocating motion insidethe pump chamber, wherein the actuator is configured for moving togetherwith its piston rod reciprocally relative the housing (20) between afirst/start position and an end and/or intermediary and/or activatedposition to pump product (2) out of the container via the spout (41) byuse of a pressing force applied by a user to the actuator to move theactuator from its first or start position towards the housing andclosure into its end and/or intermediary and/or activated position withits piston rod moving inside the pump chamber along the longitudinaldispenser pump axis and an elastic force of the spring to return theactuator with piston rod from the end or intermediary/activated positionto the first position after the pressing force is removed for sucking inproduct into the pump chamber (21), characterized in that that all partsof the dispenser pump (10) are manufactured by recyclable plasticmaterial including the spring (30) having a helical shape, that thespring comprises a wire (33) and a first end (31) and a second end (32),wherein the wire is provided with a free wire end (35, 36) at each ofthe first and second ends of the spring.
 2. The dispenser pump (10)according to claim 1, wherein the spring (30) is configured forarrangement at least partly outside the container (3) and/or the pumphousing (20) and/or the pump chamber (21) and/or the piston rod (42). 3.The dispenser pump (10) according to claim 1, wherein the spring (30) isconfigured for being arranged at least partly inside the container (3)and/or the pump housing (20) and/or the pump chamber (21) and/or thepiston rod (42).
 4. The dispenser pump (10) according to claim 3,wherein the spring (30) is configured for being arranged inside thecontainer (3) and the pump housing (20) and the pump chamber (21). 5.The dispenser pump (10) according to claim 3, wherein the spring (30) isconfigured for being arranged at least partly inside the container (3)and the pump housing (20) and the pump chamber (21) and the piston rod(42).
 6. The dispenser pump (10) according to claims 2 and 3, whereinthe spring (30) is configured for being arranged at least partly insidethe container (3) and the pump housing (20) and configured for beingarranged at least partly outside the pump chamber (21) and the pistonrod (42).
 7. The dispenser pump (10) according to any preceding claim,wherein the pump chamber (21) is configured for being located at leastpartly below the closure (4).
 8. The dispenser pump (10) according toclaim 7, wherein the pump chamber (21) is configured for being locatedwholly below the closure (4).
 9. The dispenser pump (10) according toany preceding claim, wherein the spring (30) is relaxed when theactuator (40) is in its first/start position before its firstuse/stroke.
 10. The dispenser pump (10) according to claim 9, whereinthe spring (30) is under compression when the actuator (40) has returnedto its start position after its first stroke from the start position tothe end/activated position and back to the first/start position, thisfirst stroke being a first priming stroke for enabling filling the pumpchamber (21) with product (2).
 11. The dispenser pump (10) according toany of claims 1 to 10, wherein the spring (30) is under compression whenthe actuator (40) is in its first/start position before its firstuse/stroke.
 12. The dispenser pump (10) according to any precedingclaim, wherein the spring (30) is configured for being arranged at leastpartly between the container (3)/pump housing (20)/chamber (21)/closure(4) and the spout (41).
 13. The dispenser pump (10) according to claim12, wherein the spring (30) is configured for being arranged whollybetween the container (3)/pump housing (20)/chamber (21)/closure (4) andthe spout (41).
 14. The dispenser pump (10) according to any of claims 1to 11, wherein the spring (30) is configured for being arranged whollybelow the closure (4) and/or spout (40).
 15. The dispenser pump (10)according to any of claims 1 to 13, wherein the spring (30) isconfigured for being arranged at least partly at/adjacent/close to/abovethe spout (40).
 16. The dispenser pump (10) according to claim 14 or 15,wherein the spring (30) is configured for being arranged inside thecontainer (3) and/or pump housing (20) and/or pump chamber (21) at adistance (D) from the closure (4).
 17. The dispenser pump (10) accordingto claim 10 or 11 or any of claims 12 to 16 when dependent on claim 10,further comprising a check valve (50) made of a recyclable plasticsmaterial and configured for being arranged at the pump chamber inlet(22) and a discharge valve (51) made of a recyclable plastics materialand configured for being arranged at the spout (41), the check valve(50) is configured for being closed, when the user presses down on theactuator (40) and moves the piston rod (42) towards the pump chamberinlet compressing the spring (30) while forcing product (2) out of thepump chamber (21) upwards towards the spout opening the discharge valvefor dispensing product, and for being opened when the user releases theactuator/removes the pressing force by means of the spring returning thepiston rod and actuator back into the first/start position while drawingout product inside the container (3) into the pump chamber to fill it,while closing the discharge valve and sealing or closing the pumpchamber to prevent product from flowing back into the container once thepump chamber is filled.
 18. The dispenser pump (10) according to claim17, further comprising a dip tube (60) made of a recyclable plasticsmaterial and configured to extend from the inlet (22) of the pumpchamber (21) with an adaptable length (DTL) into a predetermined depth(DC) of the container (3) depending on the type/size/length/height ofthe container.
 19. The dispenser pump (10) according to claim 18,wherein a free end (60A) of the dip tube (60) configured for receivingproduct (2) is cut into a predetermined shape and/or angle and/or sizeand/or diameter.
 20. The dispenser pump (10) according to any precedingclaim, wherein the actuator (40) and the spout (41) are configured to bemovable together as one unit.
 21. The dispenser pump (10) according toany of claims 1 to 19, wherein the actuator (40) is configured to bemovable and the spout (41) is stationary/fixated.
 22. The dispenser pump(10) according to any of claims 1 to 21, wherein the spring (30) is atwin spring (30).
 23. The dispenser pump (10) according to any of claims1 to 22 comprising at least two springs (30).
 24. The dispenser pump(10) according to claim 22 or 23, wherein one spring (30) is configuredfor being arranged inside another spring.
 25. The dispenser pump (10)according to any of claims 22 to 24, wherein a first spring (30) has asize and/or diameter being adapted for fitting within a second spring.26. The dispenser pump (10) according to any of claims 22 to 25, whereina first spring (30) having a size being adapted for fitting/beingreceived within a second spring, which springs have essentially same orthe same length (SL).
 27. The dispenser pump (10) according to any ofclaims 22 to 26, wherein a first spring (30) is adapted forfitting/being received within a second spring, the springs beingconcentrically arranged.
 28. The dispenser pump (10) according to claim27, wherein the centre axis (CS) of the first spring (30) is alignedwith the center axis (CS) of the second spring (30).
 29. A spring (30)for a dispenser pump (10) according to any preceding claim, wherein thespring (30) has a helical shape and is made of a recyclable plasticsmaterial and is at least partly shaped as a cylindrical and/ornon-cylindrical helical spring.
 30. The spring (30) according to claim29 comprising and/or configured for manufacture into and/or configuredwith a non-cylindrical shape being substantially symmetrical orsymmetrical around its centre axis (CS).
 31. The spring (30) accordingto claim 29 and/or 30 comprising and/or configured for manufacture intoand/or configured with the shape of a helically winded wire (33) with apolygonal cross-section (34).
 32. The spring (30) according to claim 29,30 or 31 comprising and/or configured with and/or configured formanufacture into the shape of a helically winded wire (33) with a squarecross-section (34).
 33. The spring (30) according to any of claims 29 to32 comprising and/or configured with and/or configured for manufactureinto the shape of a helically winded wire (33) with a rectangularcross-section (34).
 34. The spring according to any of claims 29 to 32comprising and/or configured with and/or configured for manufacture intothe shape of a helically winded wire (33) with a quadratic cross-section(34).
 35. The spring (30) according to any of claims 29 to 31 comprisingand/or configured with and/or configured for manufacture into the shapeof a helically winded wire (33) with a triangular cross-section (34).36. The spring (30) according to any of claims 29 to 32 comprisingand/or configured for manufacture into the shape of a helically windedwire (33) with a conical cross-section (34).
 37. The spring (30)according to claim 36, wherein the conical wire cross-section (34) isarranged with its apex directed radially outwards from the springcentre/longitudinal axis (CS).
 38. The spring (30) according to claim36, wherein the conical wire cross-section (34) is arranged with itsapex directed radially inwards towards the spring centre/longitudinalaxis (CS).
 39. The spring (30) according to any preceding claim, whereinthe spring (30) is configured for manufacture into the shape of ahelically winded wire (33) with a polygonal cross-section (34) havinga/an width/extension (W) in the radial direction of the spring beingless, equal or larger than its height/thickness/extension (H) in theaxial/longitudinal direction of the spring.
 40. The spring (30)according to any of claims 29 to 39 being at least partly shaped as aconical helical spring, wherein its apex is configured for facingtowards the container bottom (3B) when the dispenser pump (10) ismounted thereto.
 41. The spring (30) according to any of claims 29 to 39being at least partly shaped as a conical helical spring, wherein itsapex is configured for facing towards the container opening (3A) whenthe dispenser pump (10) is mounted thereto.
 42. The spring (30)according to any of claims 29 to 39 being at least partly shaped as aconical helical spring, wherein its apex is configured for facingtowards the spout (41) when the spring (30) is assembled in thedispenser pump (10).
 43. The spring (30) according to claim 29 or 30,comprising and/or configured for manufacture into and/or is configuredwith the shape of a helically winded wire (33) with an oval and/orelliptical cross-section (34).
 44. The spring (30) according to any ofclaims 29 to 43, wherein the spring (30) is a twin spring.
 45. Thespring (30) according to any of claims 29 to 44 comprising at least twosprings (30).
 46. The spring (30) according to claim 45, wherein onespring (30) is configured for being arranged inside another spring (30).47. The spring (30) according to claim 45 or 46, wherein a first spring(30) has a size being adapted for fitting/being received within a secondspring (30).
 48. The spring (30) according to any of claims 45 to 47,wherein a first spring (30) has a size being adapted for fitting/beingreceived within a second spring (30), which springs have essentially thesame or the same length (SL).
 49. The spring (30) according to any ofclaims 29 to 47 comprising a first end (31) and a second end (32),wherein at least one end is flattened and/or face grinded.
 50. Thespring (30) according to claim 49, wherein both its first end (31) andsecond end (32) are flattened/face grinded.
 51. The spring (30)according to claim 49 or 50, wherein the end (31, 32) is flattenedand/or face grinded in a plane being perpendicular to thecentre/longitudinal axis (CS) of the spring.
 52. The spring (30)according to any preceding claim being configured for manufacture byinjection moulding and/or machining.
 53. The spring (30) according toany preceding claim being configured with a helical envelope surfaceformed by the outer surface of the helically winded wire, which windingsform an at least partly open structure when the spring is relaxed. 54.The spring (30) according to any preceding claim, comprising one or moreopen ends (31, 32).
 55. The spring (30) according to any of the claims 1to 53, comprising one or more closed ends (31, 32).
 56. The spring (30)according to any of the claim 1 to 53 or 55, comprising one or moreclosed and grounded ends (31, 32).
 57. The spring (30) according to anyof the claim 1 to 53 or 55 or 56, comprising one or more double closedand grounded ends (31, 32).